Tuyere



Mll'ch l, 1932- H. o. JOHNSON 'r AL 1,848,079

TUYERE Filed sept. 9, 1931 Patented Mag. 1, 1932 IUNITED STATES PATENT OFFICE HARRY 0. JOHNSON AND MARTIN I T0 THE AMERICAN STEEL AND WIRE COMPANY 0F NEW JERSEY,

0F NEW JERSEY OHARE, OF DONORA, Y.LPENN'SYL'V'AIII'IA, ASSIGNORS A coaroaa'rIoN auml:

Application tied September 9, 1931. Serial No. 561,966.

This invention relates to two-piece tuyres for use in blast furnaces, one of the objects being to provide a new and useful tuyre of this character. Other objects maylater become apparent.

In the drawings: Y

Figure 1 is a cross-section of one example of this invention. n

Fi ure 2 is. a cross-section on the line II I of Figure 1. e

Figure 3 is a cross-section of a portion of a modified form of this invention.

Having reference to these drawings, there is shown a two-piece main part 2 having a cylindrical externally threaded wall 3 with a flatl annular surface 4 extending out from the base of this wall and -a second flat annular surface 5 extending in from the top of this wall. This part 2 is provided with annular water chambers 6, and the wall 3 is formed with slot-shaped apertures 7. A nozzle 8 having a cylindrical, internally threaded wall 9 is engaged on the cylindrical wall 3 of the part 2, and has a fiat annular surface 10 extending 'in from the base of this wall anda second flat annular4 surface 12 extending out from the base of this wall.

When the parts are'screwed together, as is shown, the surfaces 4 and 12, and 5 and 10 tightly contact to form a water-tight unit. The cylindrical Wall 9 is constructed with an annular slot 14 which registers with the slot-shaped apertures 7 so that communication is established with water chambers 15 in the nozzle 8, as is indicated by the arrows in Figures 1 and 3.`

l In the modified form shown' in Figure 3 the extreme end of the nozzle 8 has no water chamber but is instead filled with refractory 'material 16. This material acts as aconductor of heat back to the water chambers in this nozzle and in the main .part,2, so that the nozzles end will be maintained at a sufficiently low temperature. l The parts shown are preferably constructed oft-practically pure' copper in accordance with' the general practice of making blast furnace tu'yres.` The fact that there are two 'contacting' surfaces instead of one doubly 4`tuyre consistlng of afrom the end of this wall, and a nozzle insures a water-tight union between the parts. The simplified construction results in economy .of manufacture and maintenance and provides for easy separation of the nozzle from its main part.

Although a specific form of this invention has been shown in accordance with the patent statutes, it is not intended to limit the scope of this invention exactly thereto, except as is .defined inthe appended claims.

-We claim:

1. A two-piece tuyre comprising a main part having a cylindrical screw threaded wall with flat annular surfaces at the base and end thereof, and a nozzle having a .cylindrical screw threaded wall for engagement with the 'wall of said main part and with flat annular surfaces at the base and end of this wall for contacting the flat surfaces of said main part.

2. A two-piece tuyre comprising a main part having a cylindrical externally threaded wall With a flat annular surface extending outwardly from the base of this wall and a fiat annular surface extending inwardly havin a cylindrical internally threaded wall Witi a fiat annular surface extending outwardly from the base of this wall and a fiat annular surface extending inwardly from the end of this wall.

3. A two-piece tuyre comprising a hollow main part having a cylindrical screw threaded apertured wall with flat annular surfaces yat the base and end thereof, and a hollow nozzle having a cylindrical screw threaded annularly slotted wall for engagementwith the.

wall of said main part and with flat annular surfaces at the-base and end of this wall for lcontacting the fiat surfaces of said main part. In testimony whereof, we have hereunto set 

